Check if socket is already connected in _openSocket(). Fixes webtorrent/webtorrent#1245.

Author: guanzo

lib/client/websocket-tracker.js

@@ -172,6 +172,9 @@ class WebSocketTracker extends Tracker {
     this.socket = socketPool[this.announceUrl]
     if (this.socket) {
       socketPool[this.announceUrl].consumers += 1
+      if (this.socket.connected) {
+        this._onSocketConnectBound()
+      }
     } else {
       this.socket = socketPool[this.announceUrl] = new Socket(this.announceUrl)
       this.socket.consumers = 1